Optical intruements are an excellent tool to detect simple properties of samples. Torontech offers an auto Melting Point Apparatus is integrated with photoelectric detection, digital temperature display and automatic display of initial and final melts. Automatic polarimeter includes a built-in peltier which is a precise temperature control system with automatic photoelectric inspection technology. Automatic refractometer includes a high-performance CCD. Automatic refractometer can accurately and efficiently complete sample analysis and tests. Among our general laboratory products, Torontech offers Refrigerated and Heating Circulators.